Safety-Kleen Systems, Inc.
Models 90, 91, and 94 Manual Aqueous Parts Washers
Support Manual
Page
4
of
14
2.2 Definitions
TERM
DESCRIPTION
GFCI
The abbreviation GFCI stands for “Ground Fault Circuit
Interrupter”. It is a safety device designed to cut the electrical
power in the circuit if there is any electrical current leakage to
ground.
Impeller
The portion of the pump that spins on a shaft to move the fluid.
Thermistor and
Thermistor Tee
The sensing probes in the fluid monitoring temperature. The two
thermistors in the SK #2387 are just behind the pump connected to
a clear plastic tee.
Volute
The portion of the pump that covers the impeller and where the
flexible discharge hose screws on.
2.3 Heater Pump Controller (HPC) & Heater Pump Module (HPM)
The HPC models are obsolete, but can continue to be used until they malfunction.
These units are ETL listed in the U.S. and Canada and include:
•
(SK #2370)
•
(SK #2370.1)
•
(SK #4760)
•
(SK #2383)
The HPM Thermawave 507 (SK Part #2387) is the current model. This model is ETL
listed in the U.S. and Canada. It is identifiable by its gray metal or plastic control box.
(SK #2370)
(SK #2370.1)
(SK #2383)
(SK #2387)
(SK #2387)
Metal box
Poly box
